minio/object-errors.go

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/*
* Minio Cloud Storage, (C) 2015 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
fs: Break fs package to top-level and introduce ObjectAPI interface. ObjectAPI interface brings in changes needed for XL ObjectAPI layer. The new interface for any ObjectAPI layer is as below ``` // ObjectAPI interface. type ObjectAPI interface { // Bucket resource API. DeleteBucket(bucket string) *probe.Error ListBuckets() ([]BucketInfo, *probe.Error) MakeBucket(bucket string) *probe.Error GetBucketInfo(bucket string) (BucketInfo, *probe.Error) // Bucket query API. ListObjects(bucket, prefix, marker, delimiter string, maxKeys int) (ListObjectsResult, *probe.Error) ListMultipartUploads(bucket string, resources BucketMultipartResourcesMetadata) (BucketMultipartResourcesMetadata, *probe.Error) // Object resource API. GetObject(bucket, object string, startOffset int64) (io.ReadCloser, *probe.Error) GetObjectInfo(bucket, object string) (ObjectInfo, *probe.Error) PutObject(bucket string, object string, size int64, data io.Reader, metadata map[string]string) (ObjectInfo, *probe.Error) DeleteObject(bucket, object string) *probe.Error // Object query API. NewMultipartUpload(bucket, object string) (string, *probe.Error) PutObjectPart(bucket, object, uploadID string, partID int, size int64, data io.Reader, md5Hex string) (string, *probe.Error) ListObjectParts(bucket, object string, resources ObjectResourcesMetadata) (ObjectResourcesMetadata, *probe.Error) CompleteMultipartUpload(bucket string, object string, uploadID string, parts []CompletePart) (ObjectInfo, *probe.Error) AbortMultipartUpload(bucket, object, uploadID string) *probe.Error } ```
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package main
import (
"fmt"
"io"
)
// Converts underlying storage error. Convenience function written to
// handle all cases where we have known types of errors returned by
// underlying storage layer.
func toObjectErr(err error, params ...string) error {
switch err {
case errVolumeNotFound:
if len(params) >= 1 {
return BucketNotFound{Bucket: params[0]}
}
case errVolumeNotEmpty:
if len(params) >= 1 {
return BucketNotEmpty{Bucket: params[0]}
}
case errVolumeExists:
if len(params) >= 1 {
return BucketExists{Bucket: params[0]}
}
case errDiskFull:
return StorageFull{}
case errIsNotRegular, errFileAccessDenied:
if len(params) >= 2 {
return ObjectExistsAsDirectory{
Bucket: params[0],
Object: params[1],
}
}
case errFileNotFound:
if len(params) >= 2 {
return ObjectNotFound{
Bucket: params[0],
Object: params[1],
}
}
case errFileNameTooLong:
if len(params) >= 2 {
return ObjectNameInvalid{
Bucket: params[0],
Object: params[1],
}
}
case errXLReadQuorum:
return InsufficientReadQuorum{}
case errXLWriteQuorum:
return InsufficientWriteQuorum{}
case io.ErrUnexpectedEOF, io.ErrShortWrite:
return IncompleteBody{}
}
return err
}
// StorageFull storage ran out of space.
type StorageFull struct{}
func (e StorageFull) Error() string {
return "Storage reached its minimum free disk threshold."
}
// InsufficientReadQuorum storage cannot satisfy quorum for read operation.
type InsufficientReadQuorum struct{}
func (e InsufficientReadQuorum) Error() string {
return "Storage resources are insufficient for the read operation."
}
// InsufficientWriteQuorum storage cannot satisfy quorum for write operation.
type InsufficientWriteQuorum struct{}
func (e InsufficientWriteQuorum) Error() string {
return "Storage resources are insufficient for the write operation."
}
// GenericError - generic object layer error.
type GenericError struct {
Bucket string
Object string
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}
// BucketNotFound bucket does not exist.
type BucketNotFound GenericError
func (e BucketNotFound) Error() string {
return "Bucket not found: " + e.Bucket
}
// BucketNotEmpty bucket is not empty.
type BucketNotEmpty GenericError
func (e BucketNotEmpty) Error() string {
return "Bucket not empty: " + e.Bucket
}
// ObjectNotFound object does not exist.
type ObjectNotFound GenericError
func (e ObjectNotFound) Error() string {
return "Object not found: " + e.Bucket + "#" + e.Object
}
// ObjectExistsAsDirectory object already exists as a directory.
type ObjectExistsAsDirectory GenericError
func (e ObjectExistsAsDirectory) Error() string {
return "Object exists on : " + e.Bucket + " as directory " + e.Object
}
// BucketExists bucket exists.
type BucketExists GenericError
func (e BucketExists) Error() string {
return "Bucket exists: " + e.Bucket
}
// BadDigest - Content-MD5 you specified did not match what we received.
type BadDigest struct {
ExpectedMD5 string
CalculatedMD5 string
}
func (e BadDigest) Error() string {
return "Bad digest: Expected " + e.ExpectedMD5 + " is not valid with what we calculated " + e.CalculatedMD5
}
// UnsupportedDelimiter - unsupported delimiter.
type UnsupportedDelimiter struct {
Delimiter string
}
func (e UnsupportedDelimiter) Error() string {
return fmt.Sprintf("delimiter '%s' is not supported. Only '/' is supported", e.Delimiter)
}
// InvalidUploadIDKeyCombination - invalid upload id and key marker combination.
type InvalidUploadIDKeyCombination struct {
UploadIDMarker, KeyMarker string
}
func (e InvalidUploadIDKeyCombination) Error() string {
return fmt.Sprintf("Invalid combination of uploadID marker '%s' and marker '%s'", e.UploadIDMarker, e.KeyMarker)
}
// InvalidMarkerPrefixCombination - invalid marker and prefix combination.
type InvalidMarkerPrefixCombination struct {
Marker, Prefix string
}
func (e InvalidMarkerPrefixCombination) Error() string {
return fmt.Sprintf("Invalid combination of marker '%s' and prefix '%s'", e.Marker, e.Prefix)
}
// BucketPolicyNotFound - no bucket policy found.
type BucketPolicyNotFound GenericError
func (e BucketPolicyNotFound) Error() string {
return "No bucket policy found for bucket: " + e.Bucket
}
/// Bucket related errors.
// BucketNameInvalid - bucketname provided is invalid.
type BucketNameInvalid GenericError
// Return string an error formatted as the given text.
func (e BucketNameInvalid) Error() string {
return "Bucket name invalid: " + e.Bucket
}
/// Object related errors.
// ObjectNameInvalid - object name provided is invalid.
type ObjectNameInvalid GenericError
// Return string an error formatted as the given text.
func (e ObjectNameInvalid) Error() string {
return "Object name invalid: " + e.Bucket + "#" + e.Object
}
// IncompleteBody You did not provide the number of bytes specified by the Content-Length HTTP header.
type IncompleteBody GenericError
// Return string an error formatted as the given text.
func (e IncompleteBody) Error() string {
return e.Bucket + "#" + e.Object + "has incomplete body"
}
/// Multipart related errors.
// MalformedUploadID malformed upload id.
type MalformedUploadID struct {
UploadID string
}
func (e MalformedUploadID) Error() string {
return "Malformed upload id " + e.UploadID
}
// InvalidUploadID invalid upload id.
type InvalidUploadID struct {
UploadID string
}
func (e InvalidUploadID) Error() string {
return "Invalid upload id " + e.UploadID
}
// InvalidPart One or more of the specified parts could not be found
type InvalidPart struct{}
func (e InvalidPart) Error() string {
return "One or more of the specified parts could not be found"
}
// PartTooSmall - error if part size is less than 5MB.
type PartTooSmall struct {
PartSize int64
PartNumber int
PartETag string
}
func (e PartTooSmall) Error() string {
return fmt.Sprintf("Part size for %d should be atleast 5MB", e.PartNumber)
}